Control track stabilizing method and system



Nov. 21,1944.

H. l. REISKIND CONTROL TRACK STABILIZING METHOD AND SYSTEM Filed oct. 2s, i942 Hillel I. Reis Hind (Ittorneig cox-dance with claim 6 in which an amplifier is provided, said rectifier being bridged across the output circuit of said ampliiler.

8. The method of stabilizing the output of a' photocell subject to variations in sensitivity and to increases in the peak valuey of the illumination impinging thereon comprising `rectifying a the rectified currents to vary the photocell sen- Aportion of the output of said cell and utilizing l 9.-The method of stabilizing the output of a photocell subject to variations in sensitivity and to increases inthe peakV value of the illumination impinging thereon comprisingamplifying the vcurrent output of said cell, rectifying a portion of the current output of said cell, and utilizing the rectied current to vary the amplii cation of said currents being amplied in a. direction to neutralize the 'changes in sensitivity of sitivity in a direction to neutralize the changes w said'cell and the changes in the Peak value of in sensitivity of said cell and the changes in the peak value of the illumination th'ereongf the illumination thereon.'

' v I. REISKIND. 

